Sizing-tool for lathes



2 SheetsSheet 1.

(No Model.)

J. FLOWER. 4

SIZING TOOL POR'LATHBS.'

Patented June 6. 1.882,

2 Sheets-'Sheet 2.

(No Model.)

J. FLOWER. sIzING Toor. PoR LATHBS.

Patented June 6, 1882.

' UNITED STATES PATENTA OEEICE.

JAMES FLOWER, OF DETROIT, MICHIGAN.

slzlNe-Tool. FOR LATI-IES.

SPECIFICATION forming part of Letters Patent 1Y0/258,907, dated June 6, 1882.

Application filed February 10, 1882. (No model.) v

To all whom it may concern: t

Be it known that I, J AMES FLOWER, of Detroit, county of Wayne, State of Michigan, .have invented a new and useful Improvement in Sizing-Tools for Lathes; and I declare `the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, which form a part of this specification.

In the drawings, Figure l is an end elevation of my improved tool. Fig. 2 is a top view thereof, showing the parts in the action of lsizing a valve-stem casting. Fig. 3 is a perspective view of my tool. Fig. 4 is a vertical section online xav. Figs. 5 and 6 show two different castings for the purpose of illustrating the various uses of my tool. Y

In a patent granted to me December 6, 1881,

and numbered 250,514, I have described a tur-Y l ret-lathe providedwith a monitor lathe-head capable of receiving a number of different tools required to size, trim, cut the thread, &c.,'upon metal castings destined to form different parts of valves, hydrants, or other articles manufactured in large numbers and with their corresponding parts interchangeable.

The object of my invention described in this specification is to provide a tool for my lathe that shall do the sizing of the rough casting in a very expeditious way, and when adjusted to one particular work shall do it in a perfectlyuniform manner.

In the drawings, A represents the bed-plate, provided with the projecting'shank or lug B, by means of which the tool is secured to the lathe-head. f

C C are two parallel mortises, extending the entire lengthof the bed, and being wider at the bottom than at the top.

D is a slot between and parallel to the mortises C G'.

E is a post provided with the circular hole a. and adapted to be secured within the slot D in any desired position.

F to F6 are a number of cutting-tools se;

cured to tool-holders whose construction is as follows:

C is a cylindrical post, provided upon its lower end with the head c, adapted to enter and slide in the enlarged part of the mortise.

d is a slot in the post for the reception of the cutting-tool. A

e is a ring interposed between the bed-plate and cutting-tool.

f is a set-screw, which, when screwed in, will press upon the cutting-tool and the latterin turn bear upon the loose vring e, thereby holding both the tool and tool-holder at once in place.r` By loosening the set-screw f either the tool or tool-holder may be adjusted at will, the latter being also adjustable aroundits axis.

G is a bracket provided on the under side with the tenon or lug g, by means of which and the set-screw h it can -be :firmly secured within the mortse C', the slot t' allowing a certain range of adjustment. On the upper side this bracket isprovided with a tenon, k, which forms a guide for the sliding plate H.

F6 is a cutting-tool secured to a tool-holder similar to the one before described, and secured to the sliding plate H in the same manner as the other tools are secured to the bed A.

I is a rook shaft journaled through the bracket and provided at one end with the handlever K, on the other with the arm L, whose free end engages in a notch, l, cut into the sliding plate H.

In practice the lever K, when properly actuated, will advance or retract the plate H and tool F6, connected therewith upon the bracket G, in a direction across the bed A, and for purposes hereinafter described. The section shownin Fig. vet is taken with the plate H projected Vupon-the bed A.

'lo illustrate the working of my device I haveshown in Fig. 2-,1ny tool adjusted to do the sizing of a valve-stem, the operation having just been iinished. The dotted lines representa lathe-head, into which the shank B is secured, while the castingis secured to a chuck on the live-spindle. rIhe lathe-head being now advanced, the cutting-tools F3 and F4 size the portion M and the cutting-tool F5 sizes the portions N, O, and P and iinally the valvedisk. The cuttin g-tools F' and F2 have come later in operation, and have been sizing the portion B. If a center-bit, S, is secured in the shank B, as shown, a center may'also be cut in the end of the valve-stem. Now, if my tool is secured to a monitor lathe-head the same is retracted and the valve-stem operated upon by the screw-cutting tool and other tools, if necessar f, until, when it is tinished, the sizingtool is once more presented to the valve-stem, so as to be operated upon by the cutting-tool F5, which is advanced by means of the lever K, so as to cut the stem ott' at theproper length.

It will be observed that the post E is in a position close to the cutting-tools F3 and F4. Therefore the portion M will soon be projected through the hole a in the post E, and if this hole is made of proper size the valve-stein will be steadied thereby during the entire operation. This is of great importance for obtaining true work, especially when longaud slender objects have to be turned, and, if necessary, I may use several steadying-posts. The use of two cutting-tools upon opposite sides also tends to steady the work.

From theabovedescription itwill beseen that, the casting being secured to and rotating with the lathe chuck, and thc lathe-head being' advanced toward the chuck, the steadying-post will receive the reduced end of the casting,r and support the same while the cutters F3 F4 out the surface M. The steadying-postl E supports the casting firmly while being` acted on by the knives, and the knives being arranged to cut from both sides enables a supporting-center at the small end ot" the castiueto be entirely dispensed with. The cutter F5 is shaped differently from the other cutters in order to form the valve-disk.

Vhile I have shown in the drawings a certain number of cutting-tools, I do not specify any xed number, as it is obvious that the number of cutting-tools necessary depends entirely upon the hind of work to be operated upon. The plug shown iu Fig. 5, for example, would only require the use ot' two cuttingtools, and the stem shown in Fig. 6 could be sized with four.

Although I get the full benefit of my tool in combination with a monitor lathe-head, as described in my above-mentioned patent, still, for certain kind of work, my tool may be used with equal advantagein anordinarylathe-head.

What I claim as my invention isl. In a sizing-tool for lathes, the bed A, provided at one end with a shank, B, and having two parallel mortises, C C', running from end to end, in combination with a series ot' cutterholders secured in said mortises on both sides ofthe center of the bed, substantially as described.

2. The combination, with a sizing-tool for lathes, of one or more steadying-posts, E, provided with round holes a and adjustably securedin a slot, D,of the bed, said postor posts being adapted to support the work at diEerent points as the work is fed to the cutters, substantially as and for the purpose specified.

3. In a sizing-tool for lathes, the bed A, provided at one end with a shank, B, and having,` a central longitudinal slot, D, and two parallel mortises, C C', one on each side otl said slot, in combination with one or more apertured steadying-posts, E, adjustably securedin the slot, and a series ot' cutter-holders secured in the mortises on both sides ofthe steadying-posts, substantially as described.

JAMES FLOWER.

Witnesses:

C. J. SHIPLEY, J AMES WILsoN. 

